[go: up one dir, main page]

US6427492B1 - Bushing including a terminal ear - Google Patents

Bushing including a terminal ear Download PDF

Info

Publication number
US6427492B1
US6427492B1 US09/539,956 US53995600A US6427492B1 US 6427492 B1 US6427492 B1 US 6427492B1 US 53995600 A US53995600 A US 53995600A US 6427492 B1 US6427492 B1 US 6427492B1
Authority
US
United States
Prior art keywords
bushing
terminal
terminal ear
ear
conducting portion
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US09/539,956
Other languages
English (en)
Inventor
Timothy A. Sullivan
Jack L. Emerson
Ramin Dowlati
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Owens Corning Intellectual Capital LLC
Original Assignee
Owens Corning Fiberglas Technology Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Owens Corning Fiberglas Technology Inc filed Critical Owens Corning Fiberglas Technology Inc
Priority to US09/539,956 priority Critical patent/US6427492B1/en
Assigned to OWENS-CORNING FIBERGLAS TECHNOLOGY, INC. reassignment OWENS-CORNING FIBERGLAS TECHNOLOGY, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DOWLATI, RAMIN, EMERSON, JACK L., SULLIVAN, TIMOTHY A.
Assigned to OWENS-CORNING FIBERGLAS TECNNOLOGY, INC., A CORP. OF ILLINOIS reassignment OWENS-CORNING FIBERGLAS TECNNOLOGY, INC., A CORP. OF ILLINOIS RE-RECORD TO CORRECT THE STATE OF INCORPORATION OF THE ASSIGNEE, PREVIOUSLY RECORDED ON REEL 010983 FRAME 0393, ASSIGNOR CONFIRMS THE ASSIGNMENT OF THE ENTIRE INTEREST. Assignors: DOWLATI, RAMIN, EMERSON, JACK L., SULLIVAN, TIMOTHY A.
Priority to DE60126070T priority patent/DE60126070T2/de
Priority to EP01922442A priority patent/EP1268353B1/en
Priority to ES01922442T priority patent/ES2278735T3/es
Priority to CA2401091A priority patent/CA2401091C/en
Priority to JP2001572425A priority patent/JP4919570B2/ja
Priority to AU2001249242A priority patent/AU2001249242A1/en
Priority to PCT/US2001/008569 priority patent/WO2001074727A1/en
Priority to MXPA02009477A priority patent/MXPA02009477A/es
Priority to KR1020027012209A priority patent/KR100713595B1/ko
Publication of US6427492B1 publication Critical patent/US6427492B1/en
Application granted granted Critical
Priority to NO20024657A priority patent/NO20024657L/no
Assigned to OCV INTELLECTUAL CAPITAL, LLC reassignment OCV INTELLECTUAL CAPITAL, LLC ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: OWENS-CORNING FIBERGLAS TECHNOLOGY, INC.
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/08—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates
    • C03B37/09—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates electrically heated
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B37/00—Manufacture or treatment of flakes, fibres, or filaments from softened glass, minerals, or slags
    • C03B37/08—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates
    • C03B37/09—Bushings, e.g. construction, bushing reinforcement means; Spinnerettes; Nozzles; Nozzle plates electrically heated
    • C03B37/091—Indirect-resistance heating

Definitions

  • This invention relates generally to an apparatus for producing continuous glass filaments, and in particular, to an improved bushing including terminal ears that reduce the mechanical and thermal degradation experienced during the operation of the bushing and lengthen the operating life of the bushing and a method of manufacturing the improved bushing.
  • the invention is particularly useful in the production of continuous glass filaments for use in a wide range of applications including textiles and reinforcements.
  • a strand of glass filaments is typically formed by attenuating molten glass through a plurality of orifices in a bottom plate of a bushing.
  • the filaments are attenuated by applying tractive forces to the streams of glass, so as to attenuate the streams from the orifices in the bottom plate.
  • the filaments are coated with a size or binder material that serves to provide a lubricating quality to the individual filaments to provide them with abrasion resistance or to impart a desired array of properties to the strand in its ultimate application.
  • the size material is applied after the filaments are formed.
  • the filaments are gathered in parallel relationship to form a strand.
  • Bushings condition the molten glass to a uniform temperature so the filaments are attenuated with uniform diameters.
  • the temperature of the molten glass must be high enough to maintain the glass in a liquid state.
  • Bushings experience a corrosive operating environment imposed by the molten glass and elevated operating temperatures which accelerate the degradation of its electrical and mechanical components.
  • One solution to the degradation is to fabricate the bushing assembly from precious metals such as platinum or platinum alloys.
  • the operating environment affects these materials as well. Oxidation loss, volatilization, and migration of the precious metal into surrounding refractory materials as well as sagging or creep (high temperature deformation) of the bushing decrease bushing performance as well as shorten the useful life of the bushing assembly.
  • Conventional bushings typically include side plates, end plates, and a bottom plate defining a bushing body therebetween.
  • the bottom plate may include more than 4,000 orifices or nozzles, preferably all at or close to a uniform temperature.
  • the bottom plate may be referred to as a nozzle plate or tip plate as well.
  • Such bushings include terminals (referred to as “terminal ears”) coupled to each end plate. Both the bushing and the terminal ears are typically made of a precious metal, such as a platinum containing material like platinum or a platinum alloy. An example of a platinum alloy is a platinum-rhodium alloy. Electric clamps are connected to the terminals to deliver a heating current to the bushing to maintain the glass in its molten condition. The clamps are typically water-cooled. The current flows through the bushing side plates, end plates, and bottom plate which are conductive.
  • Bushing terminal ears have a wide range of shapes and are often wide and relatively thin.
  • the terminal ears can extend substantially along the width of the bushing end plate and provide a relatively large area for engagement by an electrical clamp that supplies the current.
  • a common terminal ear design includes an upper portion coupled to the bushing and a lower portion to which electrical clamps are coupled.
  • bushing terminal ears In addition to tip section heat pattern, two design considerations for bushing terminal ears are the mechanical and thermal degradations of the terminal ears over time. During operation of the bushing, the upper terminal ears experience a combination of mechanical fatigue and thermal effects due to the high operating temperatures of the bushing.
  • the mechanical fatigue of the terminal ear is related to high levels of bending stress or vibrational fatigue during operation of the bushing. Since the ear is wide and thin, it tends to bend when the clamp is secured to it. A fissure in the terminal ear may begin and develop into a crack.
  • the terminal ear experiences thermal degradation.
  • some metals are heated to a high temperature, they volatize or evaporate.
  • Platinum and rhodium are such metals. Since the bushing and the terminal ear operate at high temperatures, the platinum and rhodium present on the edges of the terminal ears gradually volatizes. The loss of alloy from the boundary of the ear promotes the formation of a fissure, which may expand into a crack. Mechanical working of the ear may increase the fissure and the terminal ear will eventually fail.
  • Another design approach is to redesign the power delivery system to reduce vibration and stress on the ear. This can reduce but not eliminate the problem.
  • U.S. Pat. No. 4,634,460 to Fowler discloses a drain bushing with a gusset in contact with each terminal ear to provide support for the ears.
  • the ears and the gussets are integrally connected to the bottom plate of the bushing so that the heating current supplied by the clamps through the terminal ears is delivered to the bushing through the gusset and the terminal ears.
  • the gussets effectively widen the contact between the terminal ears and the bushing.
  • the gussets provide limited support to the terminal ear and the gusset.
  • the design approach of Fowler does not address the thermal degradation of the terminal ears.
  • the shortcomings of the prior art are overcome by the disclosed bushing including a terminal ear and the method of manufacturing the bushing.
  • the bushing includes a bushing body (which can include side plates, end plates, a bottom plate) and terminal ears coupled to the bushing body. Clamps are attached to the terminal ears to supply electrical current to the bushing to maintain the glass inside in a liquid state and thermally condition it to be fiberized.
  • Each terminal ear includes an upper portion and a lower portion.
  • the upper portion is coupled to a side plate of the bushing.
  • a clamp is attached to the lower portion of the terminal ear.
  • the upper and lower portions are oriented at an angle with respect to each other.
  • Support portions are provided along the side edges of the upper portions of the terminal ears. Support portions stiffen the terminal ear, thereby increasing its resistance to bending and fatigue stresses. Support portions also serve as heat sinks by providing additional mass and surface area at the edges of the terminal ears. Heat may be absorbed from the conducting portion by the support portions because of the additional mass. The increase in surface area facilitates the cooling of the edges of the terminal ear through radiation and convection.
  • Support portions do not contact the bushing end plate and therefore do not conduct current to the bushing body. Accordingly, the temperature at the edge of the support portions during operation of the bushing will be lower than the conducting portion of the terminal ears. Since the support portions operate at a lower temperature, the thermal degradation of the terminal ear is reduced.
  • FIG. 1 is a schematic view of a conventional fiberglass forming system.
  • FIG. 2 is a schematic side view of a conventional bushing.
  • FIG. 3 is a schematic top view of the bushing of FIG. 2 .
  • FIG. 4 is a schematic side view of a bushing embodying the principles of the invention.
  • FIG. 5 is a schematic top view of the bushing of FIG. 4 .
  • FIG. 6 is a schematic end view of the bushing of FIG. 4 .
  • FIG. 7 is a cross-sectional view of the terminal ear taken along the lines “ 7 ”—“ 7 ” in FIG. 5 .
  • FIG. 8 is a cross-sectional view of an alternative embodiment of a terminal ear.
  • FIGS. 9-12 are cross-sectional views of alternative embodiments of a terminal ear.
  • a strand may be formed from a group of filaments or fibers that are typically attenuated from a source of material.
  • molten glass is delivered to a bushing that is electrically heated to maintain the glass in its molten state.
  • the glass is pulled or attenuated as filaments from orifices in a bottom plate of the bushing.
  • the filament forming system 5 includes a bushing 10 having a number of orifices through which a plurality of streams of molten glass are discharged.
  • the orifices may be extended by hollow tips.
  • Glass filaments 30 are attenuated from the bottom plate of bushing 10 by a winding apparatus 60 . Since the bushing 10 operates at high temperatures, a cooling system 22 is used to control the temperature of the bushing bottom plate and reduce any variance in the filaments due to a temperature gradient. As the artisan will appreciate, cooling systems may use air and/water to control the temperature.
  • filaments 30 are attenuated from the bushing 10 by a winding apparatus 60 that winds the filaments 30 in the form of a strand 32 around a collet to form a cylindrical package 70 as shown in FIG. 1 .
  • the bushing 10 includes a bushing body and terminal ears 100 , 102 .
  • Bushing body 11 may be of any suitable structure, and in the illustrated embodiment includes side plates 12 , 14 , end plates 16 , 18 , and a bottom plate 20 as shown in FIGS. 2 and 3.
  • the side plates 12 , 14 , end plates 16 , 18 , and bottom plate 20 define a cavity for retaining a supply of molten glass.
  • Terminal ears 100 , 102 are coupled to bushing body 11 at any suitable location.
  • the terminal ears 100 , 102 are coupled to end plates 16 , 18 , respectively.
  • Each terminal ear 100 , 102 includes an upper portion 110 and a lower portion 120 .
  • the terminal ears 100 , 102 are relatively thin, wide plates that extend substantially the entire width of the end plates 16 , 18 .
  • a terminal clamp 200 is attached to each terminal ear 100 , 102 to supply an electric current to the bushing 10 .
  • the terminal clamp 200 includes portions 210 , 212 that are secured together by a fastener, such as a bolt, to clamp to the terminal ear. For reasons of simplicity only, one terminal clamp 200 is shown in FIG. 2 .
  • the terminal ear is subjected to bending forces and fatigue due to the weight of the terminal clamp 200 that is attached to the terminal ear.
  • the terminal ear experiences additional forces from the subsequent attachment and removal of the clamp from the ear and any vibration within the bushing circuit. These forces cause mechanical bending and working of the ear and eventually create fissures or cracks. Fissures and cracks typically initiate on the outside edges of the ears and ultimately result in the failure of the terminal ear if not treated or repaired.
  • the temperature of the terminal ears increases due to resistive heating. Heat may also be conducted from the bushing body to the ears via their connection to the bushing body.
  • the alloy in the terminal ear begins to volatize as previously discussed. The depletion of alloy at the edge of the ear can produce a fissure. The fissure may increase through mechanical working or additional thermal degradation.
  • the terminal ear of the invention includes a support member coupled to the outside edges of the terminal ear to increase the bending moment of inertia of the ear, which increases resistance to bending and vibrational fatigue.
  • the support member also functions as a heat sink by providing additional mass and increasing the surface area at the edges of the terminal ear.
  • the mass of the support member enables the transfer of heat from the conducting portion via conduction.
  • the increase in surface area facilitates the radiation and convection of heat from the edges of the terminal ear.
  • the support member is implemented as an I-shaped beam welded to the terminal ears.
  • the support member can be configured with different geometries, can be coupled at other locations on the terminal ear, and can be coupled with other techniques.
  • the support portions or members have an I shaped cross-section.
  • the upper portion of the terminal ear is mounted at an angle with respect to the end plate of the bushing.
  • the weight of the terminal clamp on the terminal ear causes the upper portion to bend.
  • the support members stiffen the upper portion of the terminal ear.
  • the support portions perform multiple functions relative to the thermal degradation of the terminal ears.
  • the support portions are not in contact with the end plates of the bushing. Since electrical current typically flows in a direct path between two points, the current flows preferentially through the conducting portion of the terminal ear which is in contact with the end plate of the bushing and to a lesser extent through the support portions. As a result, the support portions do not experience as much resistive heating and therefore are at a lower temperature than the conducting portion of the terminal ear. The lower temperature reduces the volatilization of alloy from the terminal ear. Also, since the support portions are not in contact with the bushing end plates, they do not conduct heat from the bushing body and therefore are not heated by the bushing or influence the heat pattern of the bushing.
  • the amount of current that flows through the terminal ear is not affected by the terminal ear support portions. Since the amount of energy consumed in resistive heating is the same, support portions provide additional mass to the terminal ear and the total overall temperature of the terminal ear edges is reduced. The lower operating temperature on the edges extends the life of the terminal ears and the bushing.
  • the support portions enable the conduction of heat from the conducting portion. Also, support portions increase the amount of surface area at the edges of the terminal ear. Heat is removed from the support portions by radiation and convection. By increasing the surface area, more heat can be removed from the edges of the terminal ear than in conventional terminal ears.
  • FIGS. 4-8 A bushing for a filament forming system embodying the principles of the invention is illustrated in FIGS. 4-8.
  • the bushing 10 includes terminal ears 100 , 102 coupled to the bushing body 11 at end plates 16 , 18 , respectively.
  • the terminal ears are typically welded to the end plates.
  • Each terminal ear 100 , 102 includes an upper portion 110 and a lower portion 120 .
  • the upper portion 110 extends from the end plate at an angle A. Angle A ranges from 30° to 75°, and is preferably approximately 60°.
  • the lower portion 120 extends from the upper portion 110 at an angle B. Angle B ranges from 105° to 150°, and is preferably approximately 120°.
  • the upper and lower portions 110 , 120 of the terminal ears include conducting portions 116 , 122 , respectively.
  • the current supplied from the terminal clamp flows through the conducting portions 116 , 122 to the bushing 10 .
  • the bushing is typically surrounded by refractory materials to provide thermal and electrical insulation as well as mechanical support for the bushing.
  • the filament forming system 5 includes a bushing frame 80 that supports the bushing 10 in a castable refractory 82 as shown in FIG. 4 . (For simplicity of illustration, the refractory 82 and frame 80 are shown on one side of the bushing 10 .) As described in greater detail below, the upper portions 110 of the terminal ears 100 , 102 are cast in the refractory 82 .
  • Bushing terminal ears 100 , 102 include support portions 130 , 132 , 134 , 136 as shown in FIGS. 4-6. Each terminal ear upper portion includes side edges 112 , 114 as shown in FIG. 5 . The support portions are coupled to the outer side edges 112 , 114 by welding or other suitable methods. The terminal ears extend along the end plates of the bushing 10 and have a longitudinal axis A, which lies in the plane of the upper portion of the terminal ears as shown in FIG. 4 .
  • the support portions 130 , 132 , 134 , 136 are preferably oriented substantially parallel to the longitudinal axis of the terminal ears.
  • Each support portion includes ends 140 , 142 as shown in FIG. 4 .
  • End 140 is formed parallel to the end plate of the bushing.
  • the support portion is coupled to the terminal ear so that end 140 is spaced from the end plate.
  • the end 140 and the end plate 16 are preferably spaced apart sufficient to avoid contact with the end plate over the range of operating conditions and deflection due to applied loads, such as 0.12 to 0.25 in. (0.3 to 0.6 cm). Since the support portions are not in contact with the bushing end plates, the support portions do not conduct current to the bushing and the heating pattern of the bushing is not changed.
  • Each support portion 134 , 136 resembles an I beam with an I-shaped cross section (in a plane perpendicular to the longitudinal axis) including a body 144 and flanges 146 , 148 as shown.
  • the cross-section of the conducting portion is preferably rectangular.
  • the moment of inertia of the cross-section of the support portions is preferably different than that of the conducting portion cross-section.
  • the moment of inertia of a terminal ear with the support portions is greater than the moment of inertia without the support portions because the support portions include mass that is offset from a plane defined by the conducting portion.
  • the moment of inertia of each support portion is greater than that of the conducting portion.
  • the support portion is continuously welded to the side of the ear on both the upper and lower edges.
  • the terminal ear conducting portions and the support portions are symmetric about a common axis.
  • each support portion 134 , 136 is a flat plate that is welded to an outer edge of the terminal ear.
  • the support portion is located along the center of the conducting portion.
  • the conducting portion of the terminal ear has an arc shaped cross-section.
  • the conducting portion of the terminal ear has a cross-section that increases the resistance of the ear to bending.
  • the manufacturing of the bushing is now explained.
  • the body of the bushing is formed by coupling the end plates, side plates, and bottom plate together by welding or other similar methods as appreciated by the skilled artisan.
  • the upper and lower portions of the terminal ears are coupled together at an angle with respect to each other.
  • the top edge of the upper portion is then coupled to a bushing end plate.
  • the support portions are welded to the outer side edges of the terminal ears.
  • the bushing is coupled to a bushing block (not shown) and positioned inside of a bushing frame.
  • a castable refractory material is poured into the cavity between the bushing and the bushing frame.
  • the castable refractory is poured level with the tip section of the bottom plate.
  • the refractory extends below the connection of the terminal ears, preferably 0.5 in. (1.3 cm), as shown in FIG. 4 .
  • Part of the terminal ears, approximately 1 in. (2.5 cm), and support portions are embedded in the refractory.
  • terminal clamps are coupled to the lower portions of the terminal ears.
  • An electric current is supplied to the terminal clamps from a source to heat the glass in the bushing.
  • the components of the bushing terminal ear including the support member are preferably a precious metal, such as a platinum-rhodium alloy.
  • the terminal ears may include a single support portion coupled to only one side of the ears.
  • the support members may be coupled to the terminal ears at locations in addition to the side edges.
  • a support member may be positioned in the middle of the conducting portion.
  • the support members may be formed integrally with the terminal ear.
  • the terminal ears may include support portions on the lower portions of the terminal ears.
  • the cross-section of the support members may be I-shapes, outwardly or inwardly extending V-shapes or U-shapes, or any other shape that increases the moment of inertia of the conducting portion.
  • the upper and lower portions of a terminal ear may be coplanar.
  • the upper and lower portions of the terminal ears may be integrally formed.
  • the bushing may be any geometric shape, such as rectangular, square, and circular.
  • the conducting portion of the terminal ears may be nonplanar, such as an arc shape or any other shape that would increase the bending resistance of the conducting portion.
  • the support portions may be coupled to the terminal ears before the terminal ears are coupled to the bushing.
  • the terminal ears may be coupled to the side plates of the bushing in addition to or in lieu of the end plates.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Manufacture, Treatment Of Glass Fibers (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Resistance Heating (AREA)
US09/539,956 2000-03-31 2000-03-31 Bushing including a terminal ear Expired - Fee Related US6427492B1 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
US09/539,956 US6427492B1 (en) 2000-03-31 2000-03-31 Bushing including a terminal ear
KR1020027012209A KR100713595B1 (ko) 2000-03-31 2001-03-16 터미널 귀를 포함하는 부싱 및 그 부싱의 제조방법
JP2001572425A JP4919570B2 (ja) 2000-03-31 2001-03-16 端末耳部を有するブッシュ及びそのブッシュの製造方法
MXPA02009477A MXPA02009477A (es) 2000-03-31 2001-03-16 Un buje que incluye una oreja terminal y un metodo para fabricar el buje.
ES01922442T ES2278735T3 (es) 2000-03-31 2001-03-16 Hilera que incluye una orejeta terminal formando un borne y procedimiento de fabricacion de la hilera.
CA2401091A CA2401091C (en) 2000-03-31 2001-03-16 A bushing including a terminal ear and a method of manufacturing the bushing
DE60126070T DE60126070T2 (de) 2000-03-31 2001-03-16 Faserziehvorrichtung mit anschlussklemme und verfahren zur seiner herstellung
AU2001249242A AU2001249242A1 (en) 2000-03-31 2001-03-16 A bushing including a terminal ear and a method of manufacturing the bushing
PCT/US2001/008569 WO2001074727A1 (en) 2000-03-31 2001-03-16 A bushing including a terminal ear and a method of manufacturing the bushing
EP01922442A EP1268353B1 (en) 2000-03-31 2001-03-16 A bushing including a terminal ear and a method of manufacturing the bushing
NO20024657A NO20024657L (no) 2000-03-31 2002-09-27 Bössing innbefattende et terminalavlöp, og fremgangsmÕte for produksjon av bössing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US09/539,956 US6427492B1 (en) 2000-03-31 2000-03-31 Bushing including a terminal ear

Publications (1)

Publication Number Publication Date
US6427492B1 true US6427492B1 (en) 2002-08-06

Family

ID=24153353

Family Applications (1)

Application Number Title Priority Date Filing Date
US09/539,956 Expired - Fee Related US6427492B1 (en) 2000-03-31 2000-03-31 Bushing including a terminal ear

Country Status (11)

Country Link
US (1) US6427492B1 (es)
EP (1) EP1268353B1 (es)
JP (1) JP4919570B2 (es)
KR (1) KR100713595B1 (es)
AU (1) AU2001249242A1 (es)
CA (1) CA2401091C (es)
DE (1) DE60126070T2 (es)
ES (1) ES2278735T3 (es)
MX (1) MXPA02009477A (es)
NO (1) NO20024657L (es)
WO (1) WO2001074727A1 (es)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030167802A1 (en) * 2002-03-06 2003-09-11 Hanna Terry Joe Fiberizing bushings and methods of using
US20080250818A1 (en) * 2007-04-10 2008-10-16 Shen Changqing Fiberizing bushing and method for fiberizing molten material
US20110100065A1 (en) * 2009-09-11 2011-05-05 Ocv Intellectual Capital, Llc Terminal Clamp for Horizontal Ear Bushing
US20150158754A1 (en) * 2012-05-29 2015-06-11 3B-Fibreglass Sprl Reinforced terminal ear for bushing

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
PL1985717T3 (pl) 2007-04-28 2011-11-30 Umicore Ag & Co Kg Kulki amalgamatu do lamp energooszczędnych i ich wytwarzanie
EP2497841B1 (de) 2011-03-09 2015-09-02 Umicore AG & Co. KG Sn-Ag-Cu-Legierungen
EP2522637B1 (de) 2011-05-09 2019-04-10 Umicore AG & Co. KG Düseneinheit zur Herstellung von Fasern aus geschmolzenem Mineralmaterial
EP2620417A1 (en) * 2012-01-24 2013-07-31 3B Fibreglass Bushings comprising notched terminal ears
WO2014001173A1 (en) 2012-06-26 2014-01-03 Umicore Ag & Co. Kg Baseplate

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3511916A (en) 1967-03-29 1970-05-12 Johns Manville Electric resistance bushing for forming glass fibers
US3512948A (en) 1967-03-23 1970-05-19 Owens Corning Fiberglass Corp Apparatus for processing heat-softened mineral material
US4099948A (en) 1975-04-02 1978-07-11 Fibreglass Limited Bushing for processing molten glass
US4272271A (en) 1979-07-30 1981-06-09 Owens-Corning Fiberglas Corporation Apparatus for production of mineral fibers
US4516995A (en) * 1984-07-20 1985-05-14 Owens-Corning Fiberglas Corporation Apparatus for forming glass fibers
US4634460A (en) 1986-01-17 1987-01-06 Manville Service Corporation Drain bushing
EP0229648A1 (en) 1986-01-17 1987-07-22 Manville Corporation Terminal connection for fiber glass bushing
US4717411A (en) 1986-05-06 1988-01-05 Manville Corporation Drain bushing

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0229648A (ja) * 1988-07-19 1990-01-31 Dainippon Printing Co Ltd スキヤナシミユレーシヨンデータの採取方法

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3512948A (en) 1967-03-23 1970-05-19 Owens Corning Fiberglass Corp Apparatus for processing heat-softened mineral material
US3511916A (en) 1967-03-29 1970-05-12 Johns Manville Electric resistance bushing for forming glass fibers
US4099948A (en) 1975-04-02 1978-07-11 Fibreglass Limited Bushing for processing molten glass
US4272271A (en) 1979-07-30 1981-06-09 Owens-Corning Fiberglas Corporation Apparatus for production of mineral fibers
US4516995A (en) * 1984-07-20 1985-05-14 Owens-Corning Fiberglas Corporation Apparatus for forming glass fibers
US4634460A (en) 1986-01-17 1987-01-06 Manville Service Corporation Drain bushing
EP0229648A1 (en) 1986-01-17 1987-07-22 Manville Corporation Terminal connection for fiber glass bushing
US4740224A (en) * 1986-01-17 1988-04-26 Manville Corporation Terminal connection for fiber glass bushing
US4717411A (en) 1986-05-06 1988-01-05 Manville Corporation Drain bushing

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20030167802A1 (en) * 2002-03-06 2003-09-11 Hanna Terry Joe Fiberizing bushings and methods of using
US7003986B2 (en) * 2002-03-06 2006-02-28 Johns Manville International, Inc. Fiberizing bushings and methods of using
US20080250818A1 (en) * 2007-04-10 2008-10-16 Shen Changqing Fiberizing bushing and method for fiberizing molten material
US8006519B2 (en) 2007-04-10 2011-08-30 Johns Manville Fiberizing bushing with different size tips
US20110100065A1 (en) * 2009-09-11 2011-05-05 Ocv Intellectual Capital, Llc Terminal Clamp for Horizontal Ear Bushing
US20150158754A1 (en) * 2012-05-29 2015-06-11 3B-Fibreglass Sprl Reinforced terminal ear for bushing
US9556057B2 (en) * 2012-05-29 2017-01-31 3B-Fibreglass Sprl Reinforced terminal ear for bushing

Also Published As

Publication number Publication date
JP2004500302A (ja) 2004-01-08
NO20024657D0 (no) 2002-09-27
WO2001074727A1 (en) 2001-10-11
CA2401091C (en) 2010-06-29
KR100713595B1 (ko) 2007-05-02
DE60126070D1 (de) 2007-03-08
DE60126070T2 (de) 2007-11-08
AU2001249242A1 (en) 2001-10-15
MXPA02009477A (es) 2003-03-10
NO20024657L (no) 2002-11-25
JP4919570B2 (ja) 2012-04-18
CA2401091A1 (en) 2001-10-11
EP1268353A1 (en) 2003-01-02
ES2278735T3 (es) 2007-08-16
KR20020086925A (ko) 2002-11-20
EP1268353B1 (en) 2007-01-17

Similar Documents

Publication Publication Date Title
US5244483A (en) Apparatus for producing glass filaments
US6427492B1 (en) Bushing including a terminal ear
EP3098205B1 (en) Bushing for manufacturing glass fiber
JP2010521397A (ja) 複合合金成形炉アセンブリ
US8001807B2 (en) Palladium screens for bushing assembly and method of using
JP2010502543A (ja) 冷却支持フィンを備えたブッシング組立体
JP4772665B2 (ja) ガラスベースのフィラメントなどのフィラメントを生成するために使用される、ブッシング用の補強装置
US4566888A (en) Bushing construction
US20030145631A1 (en) Support for fiber bushing and bushing with same
JP5689132B2 (ja) 紡糸ノズル配列
KR100628016B1 (ko) 필라멘트 성형 장치의 부싱용의 부싱 팁 플레이트 지지어셈블리
US3841853A (en) Apparatus for production of thermoplastic materials
Koch et al. Design and manufacture of bushings for glass fibre production
WO1999058460A1 (en) Bushing insulation and frame arrangement for making fiber glass
TW200930673A (en) Tip plate and bushing delivering filaments, especially glass filaments
JPS62191438A (ja) ガラス繊維製造用ブツシング
EP2855380A1 (en) Reinforced terminal ear for bushing
CA2778012A1 (en) Transverse row bushings having ceramic supports

Legal Events

Date Code Title Description
AS Assignment

Owner name: OWENS-CORNING FIBERGLAS TECHNOLOGY, INC., ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:SULLIVAN, TIMOTHY A.;EMERSON, JACK L.;DOWLATI, RAMIN;REEL/FRAME:010983/0393;SIGNING DATES FROM 20000621 TO 20000705

AS Assignment

Owner name: OWENS-CORNING FIBERGLAS TECNNOLOGY, INC., A CORP.

Free format text: RE-RECORD TO CORRECT THE STATE OF INCORPORATION OF THE ASSIGNEE, PREVIOUSLY RECORDED ON REEL 010983 FRAME 0393, ASSIGNOR CONFIRMS THE ASSIGNMENT OF THE ENTIRE INTEREST.;ASSIGNORS:SULLIVAN, TIMOTHY A.;EMERSON, JACK L.;DOWLATI, RAMIN;REEL/FRAME:011587/0017;SIGNING DATES FROM 20000621 TO 20000705

FPAY Fee payment

Year of fee payment: 4

AS Assignment

Owner name: OCV INTELLECTUAL CAPITAL, LLC, OHIO

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:OWENS-CORNING FIBERGLAS TECHNOLOGY, INC.;REEL/FRAME:022804/0827

Effective date: 20081121

FPAY Fee payment

Year of fee payment: 8

FEPP Fee payment procedure

Free format text: PAYOR NUMBER ASSIGNED (ORIGINAL EVENT CODE: ASPN); ENTITY STATUS OF PATENT OWNER: LARGE ENTITY

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362

FP Lapsed due to failure to pay maintenance fee

Effective date: 20140806